SKF 71902ACD/P4A Angular contact ball bearings,SKF 71902 ACD/P4A Super-precision bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71902 ACD/P4A

71902 ACD/P4A

Dimensions
d 15mm
D 28mm
B 7mm
d1 18.9mm
d2 18.9mm
D1 23.7mm
r1,2min.0.3mm
r3,4min.0.2mm
a 8.5mm
Abutment dimensions
damin.17mm
dbmin.17mm
Damax.26mm
Dbmax.26.6mm
ramax.0.3mm
rbmax.0.2mm
dn 20.1mm
Calculation data
Basic dynamic load ratingC 3.77kN
Basic static load ratingC0 1.8kN
Fatigue load limitPu 0.078kN
Attainable speed for grease lubrication  50000r/min
Attainable speed for oil-air lubrication  75000r/min
Ball diameterDw 3.969mm
Number of ballsz 13 
Reference grease quantityGref 0.21cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class AGA 25N
Static axial stiffness, preload class A  40N/µm
Preload class BGB 50N
Static axial stiffness, preload class B  51N/µm
Preload class CGC 100N
Static axial stiffness, preload class C  67N/µm
Preload class DGD 200N
Static axial stiffness, preload class D  88N/µm
Calculation factors
Calculation factorf 1.05 
Calculation factorf1 0.98 
Calculation factorf2A 1 
Calculation factorf2B 1.04 
Calculation factorf2C 1.08 
Calculation factorf2D 1.14 
Calculation factorfHC 1 
Calculation factore 0.68 
Calculation factor (single, tandem)Y2 0.87 
Calculation factor (single, tandem)Y0 0.38 
Calculation factor (single, tandem)X2 0.41 
Calculation factor (back-to-back, face-to-face)Y1 0.92 
Calculation factor (back-to-back, face-to-face)Y2 1.41 
Calculation factor (back-to-back, face-to-face)Y0 0.76 
Calculation factor (back-to-back, face-to-face)X2 0.67 
Mass
Mass bearing  0.015kg
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Hot number: 130x160x15 HMSA10 RG 260x290x16 HDS2 V 331271 38730 42x65x8 CRW1 V 54959 600 VL V 71917 ACD/P4A BT4B 334023 E1/C675 NKI 10/20 NUP 212 ECP PSM 121825 A51 PSMF 253516 A51 SA 50 ESX-2LS TUWK 20 LTHR

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